v5.0.57: regenerate all from TEST API (NOT PROD)

- 43 YAML, 94 Go, 332 docs from deck-api-test.ngcloud.ru
- STANDS.md, TESTING.md, API_TOKENS.md added
- Never mix PROD/TEST again

universal_rebuild/docs-gen/postgres_backup.md

@@ -0,0 +1,13 @@
+# Resource nubes_postgres_backup
+
+Service: `nubes_postgres` (ID: 90)
+
+[PostgreSQL (основной)](postgres.md) | [Operations](postgres_ops.md) | [Backup](postgres_backup.md) | [Example](postgres_backup_example.md)
+
+## Create params
+
+None.
+
+## Delete params
+
+None.